Title: CALLBACK ERROR
Last modified: December 9, 2016

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# CALLBACK ERROR

 *  [jeffersonmidei](https://wordpress.org/support/users/jeffersonmidei/)
 * (@jeffersonmidei)
 * [9 years, 8 months ago](https://wordpress.org/support/topic/callback-error-2/)
 * Hi Guys,
 * I loved the idea of this plugin…
 * But I can’t get it running…
 * When I configured my Fb App at the Messenger Product, I got, after wrote down
   the CallBack URL:
 * “The URL couldn’t be validated. Response does not match challenge, expected value
   =”326171799″, received=”what””
 * Can you help me?

The topic ‘CALLBACK ERROR’ is closed to new replies.

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 * 0 replies
 * 1 participant
 * Last reply from: [jeffersonmidei](https://wordpress.org/support/users/jeffersonmidei/)
 * Last activity: [9 years, 8 months ago](https://wordpress.org/support/topic/callback-error-2/)
 * Status: not resolved